Will Java ever allow comments to nest?

Alex Buckley alex.buckley at oracle.com
Thu Jul 2 18:04:10 UTC 2020

On 7/2/2020 7:15 AM, Pavel Rappo wrote:
> While experimenting with comments I found that IntelliJ IDEA thinks that these are valid comments:
>      /* \u002a/ */
>      /* *\u002f */
> These comments are invalid for the same reason this is not a valid string literal:
>      "Hello,\u000Aworld"
> JLS specifies that the compiler translates Unicode escapes as the first step of lexical translation, 2 steps before comments are discarded:
>      https://docs.oracle.com/javase/specs/jls/se7/html/jls-3.html
> I filed a bug against IDEA:
>      https://youtrack.jetbrains.com/issue/IDEA-245018
Thank you for filing this bug, and (from looking at the comments in 
youtrack) helping the vendor to better understand it.


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